What even is this? Can anyone give perspective?

So. What kinds of friends hang out pretty much all the time and go places doing things together but also sleeping in the same bed and basically waking up cuddled up in the morning. But nothing is spoken of after that. Like a mutual unspoken agreement. This has been the case the last 5 or so times that I've spent the night over. No intentions of sex either. Not on my end at least. Yet, at the same time they have other friends that they've gone to visit and even stayed at their place and actually slept with them. I'm not interested in dating this person, but I'm just wondering what people think.
What even is this? Can anyone give perspective?
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